Instruction Manual Solid-State HF/50MHz Band 45W Linear Power Amplifier Model HL-45B TOKYO HY-POWER LABS., INC.
( 1 ) FEATURES HL-45B is a solid-state HF/50MHz band linear power amplifier with the maximum output power of 45W. Designed RF drive power is 5W. This amplifier is particularly designed for the use with popular portable radio of YAESU FT-817. When combined with FT-817, you can enjoy a unique and very comfortable feature of automatic band selection as well as send-receive switching, by connecting the amp and radio with the supplied special control cable.
( 2 ) SPECIFICATIONS Frequency : HF Band (1.8 ~ 28MHz and 50MHz Amateur Bands) Mode : SSB(A3E), CW(A1A), FM(F3E) RF Output Power : SSB (PEP)/CW 45W (Typical maximum output) RF Drive Power : 5W max. Duty Cycle 3 minutes (Continuous carrier transmission) DC Power : DC 13.8V, 8.5A max.
( 3 ) FRONT and REAR PANELS TOKYO HY-POWER POWER HF/50MHz POWER AMPLIFIER MODEL WARNG POWER LEVEL BAND 1.8/1.9 1 HL-45B 2 3 3.5/3.8 7 10/14 4 18/21 24/28 50 5 ① POWER : ON/OFF switch for DC power. When it is first pushed, the switch is locked to turn DC power “ ON” . If it is pushed again, the lock will be reset to turn DC power “ OFF” . ② BAND (Manual Band Select Switch) : As you press this button, BAND will be shifted to upper band. ( 1.8/1.9 → 3.5/3.
TOKYO HY-POWER LABS.,INC. TX(IN) 6 PAWER AMP HL-45B REMOTE S/N 0 0 0 0 0 0 0 ANT(OUT) 7 MADE IN JAPAN DC13.8V 8 9 ⑥ TX (RF Input connector) : Connector to apply RF drive signal from the transceiver. Connect the coaxial jumper cable from the transceiver “ ANT” . Please note that input power for HL-45B is 5W max. ⑦ REMOTE : Socket for remote cable from the transceiver. To work hard-key (Standby), ALC feedback, and auto band-set (FT-817 only). Refer to (4) TYPICAL CONNECTION AND SETTING.
( 4 ) TYPICAL CONNECTION AND SETTING A. HF/50MHz Band Antenna HL-45B Coaxial Cable 50Ω SWR Meter or Powermeter Remote Control Cable Fuse FT-817 13.8V Power Supply or Battery ＡＮＴ ＫＥＹ ＤＡＴＡ ＡＣＣ HF/50MHz Band Transceiver Black （−） Red（＋） B. HF/50MHZ Band Antenna HL-45B Coaxial Cable 50Ω SWR Meter or Powermeter Fuse Optional Cable (or Accessory cable modified by User) 13.
( 5 ) OPERATION 1) Referring to the illustration per (4) TYPICAL CONNECTION AND SETTING, connect your transceiver, amp, power supply (or battery), SWR/Power meter, antenna etc. properly. Turn on the power switch of the transceiver. In receiving state, the signal from the antenna will bypass the amplifier, and receiving signal can be heard from the transceiver. 2) Find a frequency channel that is not occupied by other stations, and key the transceiver to transmit mode to check the antenna SWR.
( 6 ) REMOTE (Remote Control Socket) Pin assignment of REMOTE socket is shown in the following table for your convenience. You can connect the supplied control cable for FT-817 to this ACC socket. Or prepare a suitable control cable for your own radio using the supplied 8 pin DIN plug. 1 2 3 4 6 7 5 8 When combining other than FT-817 radio, pin②(TX GND), pin③(GND), and pin⑦ (ALC) must be properly connected to your radio using an optional control cable, and/or modified control cable. Pin No.
( 7 ) ALC POT ADJUSTMENT If the drive power from the radio exceeds the designed limit of 5W, output of the amplifier will also exceed the designed value of 45W, and output signal wave form may get distorted, especially in SSB mode. In order to keep the output within the maximum limit and to avoid signal distortion, ALC connection is most effective. Negative DC voltage of 0〜8V max. will appear according to the amp output level.
( 8 ) PROTECTION 1) Over-drive Protection When the RF driving power from the radio exceeds 5W, this amplifier will be in the through mode (bypass). WARNG LED lamp on the front panel will light. 2) Over-voltage Protection When the supplied DC voltage exceeds 16V, this amplifier will become “ bypass” state and WARNG LED will light. 3) Reset To reset, push the POWER switch twice after checking the possible cause of protection shutdown. (First push to turn POWER off, second push to turn POWER on newly.
Depending on SWR condition of your antenna system, there may appear some RF stray on the DC power cord connecting rear socket and DC power supply. If the voltage meter of your DC power supply shows an unstable behavior as you key the radio and HL-45B amp, insert ferrite cores or clip both ends of DC power cable with clip-on ferrite cores. (For further details, consult with your local radio dealer or manufacturers of respective equipments.
